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Finding the Fourth Proportional to 156,210.08, 215,569.85 and 84,590.08

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Solution

The fourth proportional to 156,210.08, 215,569.85 and 84,590.08 is: 116,734.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,210.08 : 215,569.85 = 84,590.08 : x
  2. Step 2: Convert to fraction form
    156,210.08/215,569.85 = 84,590.08/x
  3. Step 3: Cross multiply
    156,210.08x = 215,569.85 × 84,590.08
  4. Step 4: Simplify right side
    156,210.08x = 18,235,070,529.64
  5. Step 5: Solve for x
    x = 18,235,070,529.64/156,210.08
  6. Step 6: Final answer
    x = 116,734.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.